/* eslint-disable no-undef */
/* eslint-disable no-undef */
<template>
  <div class="login-container">
    <!-- 导航栏 -->
    <van-nav-bar title="登录"
      class="page-nav-bar">

      <van-icon @click="$router.back()" slot="left" name="cross"></van-icon>
      </van-nav-bar>

    <!-- 登录表单 -->
    <van-form @submit="onSubmit"
      ref="loginForm">
      <!-- 用户名 -->
      <van-field name="mobile"
        placeholder="请输入手机号"
        type="number"
        maxlength="11"
        clearable
        v-model="user.mobile"
        :rules="userFormRules.mobile">
        <!-- 自定义图标 -->
        <i slot="left-icon"
          class="toutiao toutiao-shouji"></i>

      </van-field>
      <!-- 验证码 -->
      <van-field type="number"
        maxlength="6"
        name="code"
        placeholder="请输入验证码"
        v-model="user.code"
        :rules="userFormRules.code">
        <!-- 自定义图标 -->
        <i slot="left-icon"
          class="toutiao toutiao-yanzhengma"></i>

        <template #button>
          <!-- 倒计时 -->
          <van-count-down millisecond
            :time="1000*5"
            format="ss s"
            v-if="isCountDownShow"
            @finish="isCountDownShow=false" />
          <van-button class="send-sms-btn"
            v-else
            round
            size="small"
            native-type="button"
            @click="onSendSms"
            type="default">获取验证码</van-button>
        </template>
      </van-field>
      <div class="login-btn-wrap">
        <van-button block
          class="login-btn"
          type="info"
          native-type="submit">登录</van-button>
      </div>
    </van-form>
  </div>
</template>

<script>
import { login, sendSms } from '@/api/user.js'

export default {
  name: 'Login',
  props: {},
  data () {
    return {
      // 表单数据
      user: {
        mobile: '', // 手机号
        code: '' // 验证码
      },
      // 表单验证规则
      userFormRules: {
        mobile: [{ required: true, message: '手机号不能为空' }, {
          pattern: /^1[3|5|7|8]\d{9}$/,
          message: '手机号格式错误'
        }],
        code: [{
          required: true,
          message: '验证码不能为空'
        }, {
          pattern: /^\d{6}$/,
          message: '验证码格式错误'
        }]
      },
      // 控制倒计时展示开关
      isCountDownShow: false
    }
  },
  created () {

  },
  methods: {
    async onSubmit () {
      // 1. 获取表单数据
      const user = this.user

      // TODO: 2. 表单验证

      // loading 转圈圈提示
      this.$toast.loading({
        message: '加载中...',
        forbidClick: true,
        duration: 0 // 持续展示 toast
      })

      // 3. 提交表单请求登录
      try {
        const { data: res } = await login(user)
        console.log(res)
        this.$store.commit('setUser', res.data)
        this.$toast.success('登录成功')

        // 登录成功，跳转到原来的页面
        this.$router.back()
      } catch (err) {
        if (err.response.status === 400) {
          this.$toast.fail('登录失败，手机号或验证码错误')
        } else {
          this.$toast.success('登录失败，请稍后重试!')
        }
      }

      // 4. 根据请求响应结果处理后续操作
    },

    // 发送验证码校验
    async onSendSms () {
      console.log('onSendSms')
      // 1. 校验手机号
      try {
        await this.$refs.loginForm.validate('mobile')
        // console.log(this.$refs.loginForm)
      } catch (err) {
        return console.log('验证失败', err)
      }

      // 2. 验证通过，显示倒计时
      this.isCountDownShow = true
      // 3. 请求发送验证码

      try {
        await sendSms(this.user.mobile)
        this.$toast('发送成功')
      } catch (err) {
        this.isCountDownShow = false
        // console.log('发送验证码失败', err)
        if (err.response.status === 429) {
          this.$toast('发送太频繁了，请稍后重试')
        } else {
          this.$toast('发送失败，请稍后重试')
        }
      }
    }

  }
}

</script>

<style lang="less" scoped>
.login-container {
  .toutiao {
    font-size: 37px;

  }
  .send-sms-btn {
    // width: 152px;
    height: 46px;
    line-height: 46px;
    background-color: #ededed;
    font-size: 22px;
    color: #666;
  }
   .login-btn-wrap {
    padding: 53px 33px;
    .login-btn {
      background-color: #6db4fb;
      border: none;
    }
  }
}
</style>
